The investigation of the aluminum insulation wire characteristic change in the seashore area

ACSR-OC(aluminum stranded conductors steel reinforced outdoor linked wires) wire is composed of the three type metals(aluminum, zinc, iron) and contacted with each other. So ACSR-OC wire is liable to occur the electrolytic corrosion when the conductive water solution exists. We carried out the test about the used ACSR-OC wires above 10 years in the real site and the new products in order to investigate the performance characteristic changed by a salt. Also we conducted the mechanical strength test, the component analysis(SEM) and the microscope observation of each samples. As a result of experiment, A component as a Al, O, Cl, Na has been detected in the wire surface of the used line. Also the wire has been already corroded or underway, therefore the mechanical strength of wire has been reduced.